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 ###Instrução: Em que data foi o handicap de 8 st 12 lb?
 ###Tabelas: CREATE TABLE past_opponents (past_opponents_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Competition VARCHAR, Round VARCHAR, Club VARCHAR, 1st leg VARCHAR) CREATE TABLE main_issuers (main_issuers_id AUTO_INCREMENT PRIMARY KEY, Currency VARCHAR, Country VARCHAR, Generic Name or Nickname VARCHAR, Rating ( S&P / Moodys ) VARCHAR, Negotiable debt at mid-2005 ( US dollar bn equivalent) INT, Government financial liabilities as % of GDP (end 2003 - source : OECD ) VARCHAR, Issuer VARCHAR, Internet site VARCHAR) CREATE TABLE race_record (race_record_id AUTO_INCREMENT PRIMARY KEY, Age INT, Date VARCHAR, Track VARCHAR, Race VARCHAR, Distance (miles) VARCHAR, Jockey VARCHAR, Handicap VARCHAR, Field (No. horses) VARCHAR, Place VARCHAR, Time VARCHAR, Prize Money VARCHAR, + Sweepstake VARCHAR, Archer’s winnings VARCHAR) CREATE TABLE central_otago_district (central_otago_district_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Years VARCHAR, Gender VARCHAR, Area VARCHAR, Authority VARCHAR, Decile INT, Roll INT) CREATE TABLE amd (amd_id AUTO_INCREMENT PRIMARY KEY, Core VARCHAR, Processor VARCHAR, Model VARCHAR, Clock Speed VARCHAR, L2 Cache VARCHAR, Voltage VARCHAR, TDP VARCHAR, Clock Speed to TDP ratio (MHz/W) VARCHAR)  
SELECT Date FROM race_record WHERE Handicap = 8 st 12 lb